G100 Range
OMG100N1.21
Copyright Geotechnical Instruments (UK) Limited
Page
19
5.9.2.3 Alarms
The G100 range of instruments has the facility to set rising or falling alarms for the two
main gas channels, CO
2
and O
2
(if selected as an option). The alarms for each channel
can be enabled or disabled independently via the ‘Alarms’ menu option.
Once enabled these alarms become active in the ‘Main Read Screen’; this is indicated by
a bell icon. If an alarm is triggered the screen turns red and a flashing bell icon is
displayed. The beeper is sounded until the gas level has recovered beyond the trigger
point.
Rising alarms are triggered when the gas level exceeds the maximum value entered
by the user.
Falling alarms are triggered when the gas level falls below the minimum value
entered by the user.
1)
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2)
Press ‘Key 2’ to display the ‘Utilities’ menu.
3)
Press ‘Key 3’ to select alarm settings and the following screen is displayed:
Current Alarms
4)
Press ‘Key 1’ to maintain CO
2
alarm and ‘Key 2’ to maintain O
2
alarm.
5)
Select from the following:
1-Enabled/Disabled
Toggle between disabled and enabled alarm status.
2-Max
Sets the upper limit alarm setting.
3-Min
Sets the minimum alarm setting. The default is 0.
6)
Select the option to modify followed by the soft-key ‘Accept’ or ‘Reject’.
5.9.2.4 Settings
The ‘Settings’ option enables the operator to maintain information with regards to
taking samples and readings.
1)
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2)
Press ‘Key 2’ to display the ‘Utilities’ menu.
3)
Press ‘Key 4’ to select settings and the following screen is displayed: